Improvement in wind-wheels



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"Mam 6N CHANDLER P. CHAPMAN, OF MADISON, WISCNSIN.

Letters Potent No. 83,928, dated November l0, 1868.

IMPROVEMENT IN WIND-WHEELS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

-Be it known that I, CHANDLER l?. CHAPMAN, of Madison, in the county of Dane, and State of Wisconsin, have invented a new and useful Improvement in Windmills; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forniing a part of this specication, in which- Figure l represents an' elevation of a windmill constructed according to myimprovenient, and

Figure 2 represents a plan of the saine with governor removed. l

Similar letters of reference indicate corresponding parts in both figures.

This invention consists in the construction andarraugement of two steering-vanos, presenting surfaces of diiferent area, hung to turn loosely upon .axes arranged at right angles to each other, and so linked together that when one is vertical inits cross-section, the other is horizontal, and lrice versa, and which are connccted to and operated upon by a governor, whereby the feathering ofthe one or the other will be caused to throw the wheel to or from the wind, as the force of the latter diminishes or increases, and thereby be made to regulate the power. y

In order that others may be better enabled to understand the construction and operation of my invention,

y I will proceed to describe it with reference to the drawings.

A is a circular frame resting and sliding upon a l1.orizontal platform, B, supported at a suitable elevation, and provided with a circular track upon which the circular frame A revolves. This frame carries the bearingsof the wheel-'shaft D, andthe axis of the tail-vane F, so that the said vane will extend in aline with the shaft, and directly behind the wheel. This steeringvane F is connected with a gbvemor, H, by a curved rod, a, linked to a projection, b, attached to the lower edge ofthe vane, and, passing. upward, collars upon the governor, below the toggle-levers thereof` From the rim of the frame A, on the saine horizontal plane with and at right angles to the axis c of the steering-vane F, projects the axis j' of a smaller steering-vane, G, upon which is loosely hung the said vane Gr, and coupled with and at right angles to the main steering-ranch, relatively to their cross-sections. This coupling is effected by means of a rod, d, one end of which is hooked into .a projecting hook or loop, y, attached to that portion of the edge ofthe vane G nearest to the vane F, and the otherend hooked or linked into the projection b upon the lower edge ofthe main vane F, or the rod d may be connected to the gowernor direct. These vanes. are so operated upon by the action of the governor that when one is feathered the other is extended, and cioe corsa.

In describing the operation of my invention, I will omit the description .of those parts in the drawings which are generally known, and coniine myself to those parts which constitute my improvement, and which consist mainly in the smaller steering-vane G, with its connections, the feathering of the larger steering-vane Fby the action of the governor, and the consequent results produced thereby upon the action of the mill, whichis as follows:

The elevation of the governor, caused by the acceleration of the wheel, instead of featheringthe paddles of the wheel, as is the case with other Windmills regnlated by a governor, feathers the main steering-vane F by means of the cuived rod a. This featbering-movement of the said vane F produces a contrary eiieot upon the smaller vane G, its flat surface being brought to the wind by means of the rod d, while the larger vane F is beingfefthered bythe increasing elevation of the governor, which operation, sooner or later, causes the `wind-pressure upon the smaller vane to predominate over the wind-pressure upon the larger vane, and the circular frame A, yielding to the additional pressure against the surface of the smaller vane G, turns upon lits track and presents the edge of the wheel to the wind;

different modifications of this action being produced by dilierent degrees of acceleration given to the wheel by the action of the wind.' lhe wheel being thrown out of the wind, the speed is decreased, and the balls of the governor sinking by means of their weight, assisted, it may be, by a greater portion of the Weight of the vane F being below its airis, causes it to assume its former position, 'thereby ieathcring the smaller vane, and again turning the face of the wheel to the wind.

What I claim as my invention, and desire to have secured by Letters Patent, is

'Ihe combination of the pivoted main vane F, connected to the governor by the rod (t, with the pivoted auxiliary vane (l, connected by rod d to the vane F, for thc purpose of changing the position of the wheel to the wind, substantially as described.

CHANDLER P. CHAPMAN. Witnesses z MANNING Tnnnwny, H. J. SAW. 

